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how to remove weknow.ac virus

My Mac Book is infected with weknow.ac virus. How can remove this virus?

MacBook, Mac OS X (10.6.8)

Posted on Sep 13, 2018 10:19 AM

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Question marked as Top-ranking reply

Posted on Mar 3, 2019 2:58 PM

Here's how I solved it.


  1. I did all of the things mentioned above in Terminal with the six command lines. That still didn't work.
  2. I called Apple Support and they had me follow these steps:
    1. Go to System Preferences
    2. Click on Profiles
    3. Delete the profiles (there was one that the virus created for Safari and another for Chrome)
    4. Reopen Browsers and the problem is solved.


I'm not sure this will work for everyone, but it worked for me.


Good luck!

126 replies

how to remove weknow.ac virus

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